Question

question 7
1 pts
monosomy occurs when an individuals cells:
have only one haploid set of chromosomes
none of these
have 3 of a particular type of chromosome
are missing 1 of a particular type of chromosome
have the correct number of chromosomes

Explanation:

Monosomy is a type of aneuploidy. Aneuploidy refers to an abnormal number of chromosomes in a cell. Monosomy specifically means that a cell is missing one chromosome from a pair. For example, in humans, Turner syndrome (45,X) is a result of monosomy of the sex chromosomes (missing one X chromosome).

• Having only one haploid set of chromosomes is called haploidy. In humans, gametes (sperm and egg) are haploid.
• Having 3 of a particular type of chromosome is called trisomy. Down syndrome (47,XX,+21 or 47,XY,+21) is an example of trisomy (an extra copy of chromosome 21).
• Having the correct number of chromosomes is euploidy. In humans, somatic cells are diploid (2n = 46 chromosomes).

Answer:

are missing 1 of a particular type of chromosome